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Showing content from https://patents.google.com/patent/MX2012006823A/en below:

MX2012006823A - Sbr bitstream parameter downmix.

MX2012006823A - Sbr bitstream parameter downmix. - Google PatentsSbr bitstream parameter downmix. Info

Publication number: MX2012006823A
Authority: MX; Mexico
Prior art keywords: frequency band; energy related; value; elementary; target
Prior art date: 2009-12-16

Application number

MX2012006823A

Other languages

Spanish (es)

Inventor

Kristofer Kjoerling

Robin Thesing

Original Assignee

Dolby Int Ab

Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)

2009-12-16

Filing date

2010-12-14

Publication date

2012-07-23

2010-12-14 Application filed by Dolby Int Ab filed Critical Dolby Int Ab

2012-07-23 Publication of MX2012006823A publication Critical patent/MX2012006823A/en

Links

238000000638 solvent extraction Methods 0.000 abstract 4
238000000034 method Methods 0.000 abstract 2
230000010076 replication Effects 0.000 abstract 1
230000003595 spectral effect Effects 0.000 abstract 1

Classifications

- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L21/00—Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
- G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
- G10L19/008—Multichannel audio signal coding or decoding using interchannel correlation to reduce redundancy, e.g. joint-stereo, intensity-coding or matrixing
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L21/00—Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
- G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
- G10L21/038—Speech enhancement, e.g. noise reduction or echo cancellation using band spreading techniques

Landscapes

Engineering & Computer Science (AREA)
Physics & Mathematics (AREA)
Human Computer Interaction (AREA)
Signal Processing (AREA)
Health & Medical Sciences (AREA)
Audiology, Speech & Language Pathology (AREA)
Computational Linguistics (AREA)
Acoustics & Sound (AREA)
Multimedia (AREA)
Quality & Reliability (AREA)
Mathematical Physics (AREA)
Stereophonic System (AREA)
Medicines That Contain Protein Lipid Enzymes And Other Medicines (AREA)
Optical Filters (AREA)
Compression, Expansion, Code Conversion, And Decoders (AREA)

Abstract

The present document relates to audio decoding and/or audio transcoding. In particular, the present document relates to a scheme for efficiently decoding a number M of audio channels from a bitstream comprising a higher number N of audio channels. In this context a method and system for merging a first and a second source set of spectral band replication (SBR) parameters to a target set of SBR parameters is described. The first and second source set comprise a first and second frequency band partitioning, respectively, which are different from one another. The first source set comprises a first set of energy related values associated with frequency bands of the first frequency band partitioning. The second source set comprises a second set of energy related values associated with frequency bands of the second frequency band partitioning. The target set comprises a target energy related value associated with an elementary frequency band. The method comprises the steps of breaking up the first and the second frequency band partitioning into a joint grid comprising the elementary frequency band; assigning a first value of the first set of energy related values to the elementary frequency band; assigning a second value of the second set of energy related values to the elementary frequency band; and combining the first and second value to yield the target energy related value for the elementary frequency band.

MX2012006823A 2009-12-16 2010-12-14 Sbr bitstream parameter downmix. MX2012006823A (en) Applications Claiming Priority (2) Application Number Priority Date Filing Date Title US28691209P 2009-12-16 2009-12-16 PCT/EP2010/069651 WO2011073201A2 (en) 2009-12-16 2010-12-14 Sbr bitstream parameter downmix Publications (1) Family ID=43733150 Family Applications (1) Application Number Title Priority Date Filing Date MX2012006823A MX2012006823A (en) 2009-12-16 2010-12-14 Sbr bitstream parameter downmix. Country Status (14) Families Citing this family (20) * Cited by examiner, â Cited by third party Publication number Priority date Publication date Assignee Title EP2239732A1 (en) 2009-04-09 2010-10-13 Fraunhofer-Gesellschaft zur FÃ¶rderung der Angewandten Forschung e.V. Apparatus and method for generating a synthesis audio signal and for encoding an audio signal RU2452044C1 (en) 2009-04-02 2012-05-27 Ð¤ÑÐ°ÑÐ½ÑÐ¾ÑÐµÑ-ÐÐµÐ·ÐµÐ»Ð»ÑÑÐ°ÑÑ ÑÑÑ Ð¤ÑÑÐ´ÐµÑÑÐ½Ð³ Ð´ÐµÑ Ð°Ð½Ð³ÐµÐ²Ð°Ð½Ð´ÑÐµÐ½ Ð¤Ð¾ÑÑÑÐ½Ð³ Ð.Ð¤. Apparatus, method and media with programme code for generating representation of bandwidth-extended signal on basis of input signal representation using combination of harmonic bandwidth-extension and non-harmonic bandwidth-extension AR077680A1 (en) 2009-08-07 2011-09-14 Dolby Int Ab DATA FLOW AUTHENTICATION TWI413110B (en) 2009-10-06 2013-10-21 Dolby Int Ab Efficient multichannel signal processing by selective channel decoding US9105300B2 (en) 2009-10-19 2015-08-11 Dolby International Ab Metadata time marking information for indicating a section of an audio object CN102576541B (en) 2009-10-21 2013-09-18 ææ¯å½éå¬å¸ Oversampling in a combined transposer filter bank US9047875B2 (en) * 2010-07-19 2015-06-02 Futurewei Technologies, Inc. Spectrum flatness control for bandwidth extension TWI462087B (en) 2010-11-12 2014-11-21 Dolby Lab Licensing Corp Downmix limiting CN102800317B (en) * 2011-05-25 2014-09-17 åä¸ºææ¯æéå¬å¸ Signal classification method and equipment, and encoding and decoding methods and equipment US9070361B2 (en) * 2011-06-10 2015-06-30 Google Technology Holdings LLC Method and apparatus for encoding a wideband speech signal utilizing downmixing of a highband component US10178489B2 (en) 2013-02-08 2019-01-08 Qualcomm Incorporated Signaling audio rendering information in a bitstream JP6019266B2 (en) 2013-04-05 2016-11-02 ãã«ãã¼ã»ã¤ã³ã¿ã¼ãã·ã§ãã«ã»ã¢ã¼ãã¼ Stereo audio encoder and decoder EP3742440B1 (en) * 2013-04-05 2024-07-31 Dolby International AB Audio decoder for interleaved waveform coding US8804971B1 (en) * 2013-04-30 2014-08-12 Dolby International Ab Hybrid encoding of higher frequency and downmixed low frequency content of multichannel audio EP2830056A1 (en) 2013-07-22 2015-01-28 Fraunhofer-Gesellschaft zur FÃ¶rderung der angewandten Forschung e.V. Apparatus and method for encoding or decoding an audio signal with intelligent gap filling in the spectral domain EP2830052A1 (en) 2013-07-22 2015-01-28 Fraunhofer-Gesellschaft zur FÃ¶rderung der angewandten Forschung e.V. Audio decoder, audio encoder, method for providing at least four audio channel signals on the basis of an encoded representation, method for providing an encoded representation on the basis of at least four audio channel signals and computer program using a bandwidth extension EP2830053A1 (en) 2013-07-22 2015-01-28 Fraunhofer-Gesellschaft zur FÃ¶rderung der angewandten Forschung e.V. Multi-channel audio decoder, multi-channel audio encoder, methods and computer program using a residual-signal-based adjustment of a contribution of a decorrelated signal TWI557726B (en) * 2013-08-29 2016-11-11 ææ¯åéå¬å¸ System and method for determining a master scale factor band table for a highband signal of an audio signal KR102713162B1 (en) 2013-09-12 2024-10-07 ëë¹ ì¸í°ë¤ìë ìì´ë¹ Time-alignment of qmf based processing data US10839824B2 (en) 2014-03-27 2020-11-17 Pioneer Corporation Audio device, missing band estimation device, signal processing method, and frequency band estimation device Family Cites Families (20) * Cited by examiner, â Cited by third party Publication number Priority date Publication date Assignee Title SE512719C2 (en) * 1997-06-10 2000-05-02 Lars Gustaf Liljeryd A method and apparatus for reducing data flow based on harmonic bandwidth expansion DE10328777A1 (en) 2003-06-25 2005-01-27 Coding Technologies Ab Apparatus and method for encoding an audio signal and apparatus and method for decoding an encoded audio signal BRPI0415951B1 (en) 2003-10-30 2018-08-28 Coding Tech Ab audio method and encoder to encode an audio signal, and audio method and decoder to decode an encoded audio signal EP1721312B1 (en) * 2004-03-01 2008-03-26 Dolby Laboratories Licensing Corporation Multichannel audio coding JP4495209B2 (en) 2004-03-12 2010-06-30 ããã¢ ã³ã¼ãã¬ã¤ã·ã§ã³ Synthesis of mono audio signal based on encoded multi-channel audio signal SE0402652D0 (en) * 2004-11-02 2004-11-02 Coding Tech Ab Methods for improved performance of prediction based multi-channel reconstruction KR100818268B1 (en) * 2005-04-14 2008-04-02 ì¼ì±ì ìì£¼ìíì¬ Apparatus and method for audio encoding/decoding with scalability BRPI0613469A2 (en) * 2005-07-14 2012-11-06 Koninkl Philips Electronics Nv apparatus and methods for generating a number of audio output channels and a data stream, data stream, storage medium, receiver for generating a number of audio output channels, transmitter for generating a data stream, transmission system , methods of receiving and transmitting a data stream, computer program product, and audio playback and audio recording devices TWI485698B (en) * 2005-09-14 2015-05-21 Lg Electronics Inc Method and apparatus for decoding an audio signal US20080221907A1 (en) * 2005-09-14 2008-09-11 Lg Electronics, Inc. Method and Apparatus for Decoding an Audio Signal CN101292284B (en) * 2005-10-20 2012-10-10 Lgçµåæ ªå¼ä¼ç¤¾ Method for encoding and decoding multi-channel audio signal and apparatus thereof WO2007046659A1 (en) * 2005-10-20 2007-04-26 Lg Electronics Inc. Method for encoding and decoding multi-channel audio signal and apparatus thereof JP5154538B2 (en) * 2006-03-29 2013-02-27 ã³ã¼ãã³ã¯ã¬ãã« ãã£ãªããã¹ ã¨ã¬ã¯ãããã¯ã¹ ã¨ã ã´ã£ Audio decoding ATE527833T1 (en) * 2006-05-04 2011-10-15 Lg Electronics Inc IMPROVE STEREO AUDIO SIGNALS WITH REMIXING DE102006049154B4 (en) * 2006-10-18 2009-07-09 Fraunhofer-Gesellschaft zur FÃ¶rderung der angewandten Forschung e.V. Coding of an information signal TWI406267B (en) * 2007-10-17 2013-08-21 Fraunhofer Ges Forschung An audio decoder, method for decoding a multi-audio-object signal, and program with a program code for executing method thereof. ATE500588T1 (en) * 2008-01-04 2011-03-15 Dolby Sweden Ab AUDIO ENCODERS AND DECODERS KR101413968B1 (en) 2008-01-29 2014-07-01 ì¼ì±ì ìì£¼ìíì¬ Method and apparatus for encoding and decoding an audio signal BRPI0906078B1 (en) * 2008-03-04 2020-12-29 Fraunhofer-Gesellschaft zur FÃ¶rderung der angewandten Forschung e.V. equipment for mixing various input data streams US20180066125A1 (en) 2015-07-28 2018-03-08 Lg Chem, Ltd. Plasticizer composition, resin composition and method of preparing the same

2010
- 2010-12-14 MY MYPI2012001932A patent/MY166998A/en unknown
- 2010-12-14 CA CA2779388A patent/CA2779388C/en active Active
- 2010-12-14 CN CN201410084189.7A patent/CN103854651B/en active Active
- 2010-12-14 AU AU2010332925A patent/AU2010332925B2/en active Active
- 2010-12-14 KR KR1020127014575A patent/KR101370870B1/en active Active
- 2010-12-14 UA UAA201207272A patent/UA101291C2/en unknown
- 2010-12-14 MX MX2012006823A patent/MX2012006823A/en active IP Right Grant
- 2010-12-14 JP JP2012540463A patent/JP5298245B2/en active Active
- 2010-12-14 RU RU2012124827/08A patent/RU2526745C2/en active
- 2010-12-14 US US13/509,396 patent/US9508351B2/en active Active
- 2010-12-14 CN CN201080053083.0A patent/CN102667920B/en active Active
- 2010-12-14 BR BR112012014856-7A patent/BR112012014856B1/en active IP Right Grant
- 2010-12-14 WO PCT/EP2010/069651 patent/WO2011073201A2/en active Application Filing
- 2010-12-14 EP EP10798039.3A patent/EP2513899B1/en active Active
2012
- 2012-05-01 IL IL219506A patent/IL219506A/en active IP Right Grant
2013
- 2013-06-17 JP JP2013126293A patent/JP5539573B2/en active Active

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